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FFmpeg Video Editor · sundial-org | DecimalAI

design mediaby sundial-org

FFmpeg Video Editor

sundial-org/ffmpeg-video-editor

Source sundial-org/awesome-openclaw-skills ↗License Not recorded

Generate FFmpeg commands from natural language video editing requests - cut, trim, convert, compress, change aspect ratio, extract audio, and more.

SkillScore100Maintained

Automatic

Coding pack

Last verified 8/19/2026

What it changes

Passed 25 of 25 test cases with the skill, and 15 of 25 without it.

Without skill60%

With skill100%

Checks it passed that the model alone missed

Uses audio codec -c:a mp3
Uses video filter -vf scale=1280:720
Sets constant rate factor to -crf 23

and 9 more in the full report

10 fixed15 passed either way0 still failing0 broke

Pass-rate lift: +40 pp
Tokens: +184%
Agent turns: 0%
Response time: -54%

Model gemini-3.6-flashMeasured 8/19/2026v125 of 25 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/sundial-org-ffmpeg-video-editor/SKILL.md https://app.decimal.ai/s/sundial-org-ffmpeg-video-editor/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add sundial-org-ffmpeg-video-editor, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/sundial-org-ffmpeg-video-editor/ and pins it in .decimal/skills.lock

decimalai skills add sundial-org-ffmpeg-video-editor

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/sundial-org-ffmpeg-video-editor/SKILL.md https://app.decimal.ai/s/sundial-org-ffmpeg-video-editor/SKILL.md

Raw file: /s/sundial-org-ffmpeg-video-editor/SKILL.md ↗ · machine-readable summary at /s/sundial-org-ffmpeg-video-editor.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 10

Prompt

Can you give me the terminal command to speed up my lecture recording presentation.mp4 to double speed for both video and audio tracks? I haven't picked an output filename yet, so please select an appropriate default name.

What was checked, without and with the skill
Checked	Without skill	With skill
Includes the -y overwrite flag in the command	Missed	Passed
Includes the -hide_banner flag in the command	Missed	Passed
Uses -filter_complex to adjust both video and audio speed	Missed	Passed

case-02 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md388 linessingle file

FFmpeg Video Editor

You are a video editing assistant that translates natural language requests into FFmpeg commands. When the user asks to edit a video, generate the correct FFmpeg command.

How to Generate Commands

Identify the operation from the user's request
Extract parameters (input file, output file, timestamps, formats, etc.)
Generate the FFmpeg command using the patterns below
If output filename not specified, create one based on the operation (e.g., video_trimmed.mp4)
Always include -y (overwrite) and -hide_banner for cleaner output

Command Reference

Cut/Trim Video

Extract a portion of video between two timestamps.

User might say: "cut video.mp4 from 1:21 to 1:35", "trim first 30 seconds", "extract 0:05:00 to 0:10:30"

Command:

ffmpeg -y -hide_banner -i "INPUT" -ss START_TIME -to END_TIME -c copy "OUTPUT"

Examples:

Cut from 1:21 to 1:35:

ffmpeg -y -hide_banner -i "video.mp4" -ss 00:01:21 -to 00:01:35 -c copy "video_trimmed.mp4"

Extract first 2 minutes:

ffmpeg -y -hide_banner -i "video.mp4" -ss 00:00:00 -to 00:02:00 -c copy "video_clip.mp4"

Format Conversion

Track record

Benchmark

25 / 25

test cases passed, vs 15 / 25 without

Adoption

Users: 9
Times used: 159

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

sundial-org / awesome-openclaw-skills

skills/ffmpeg-video-editor/SKILL.md

View on GitHub ↗

Imported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

FFmpeg Video Editor

How to Generate Commands

Command Reference

Cut/Trim Video

Format Conversion

Track record

Benchmark

Adoption

SkillSafety

Source

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